Polycrystalline solar panels are made from multiple silicon crystals fused to form a single panel. Each crystal in a polycrystalline panel is randomly oriented, creating a grainy appearance. The manufacturing process of polycrystalline panels involves melting raw silicon and then pouring it into a square mold, where it. Unlike polycrystalline solar cells, monocrystalline panels are made from a single and continuous crystal of high-purity silicon. Due to the use of. Thin film panels use thin layers of silicon and other semiconductor materials to convert sunlight into energy. Unlike monocrystalline and.